Review Quizz 1

Sounds are produced by ________

• vibrating objects.

• moving objects.

• shouting loud.

• musical instruments.

_________ vibrations give louder sounds.

• Smaller

• Higher

• Bigger

• Quicker

Frequency is the number of vibrations per _________

• minutes.

• decades.

• seconds.

• time.

What is the unit of frequency?

• Hz

• Pa

• Mo

• none of the above

What is the apparatus used to display traces representing sound waves?

• Ammeter

• Voltmeter

• Oscilloscope

• Clock

Louder sounds have waves with a greater amplitude.

• False

• True

The ​pitch​ of a sound is essentially a description of the frequency of the sound. Different pitches correspond to different frequencies. High pitch means _______ frequency, and low pitch means ___ frequency.

• high ....... low

• low ........ high

• loud ....... quiet

• fast ........ slow

A distance / time graph can be used to find out distances travelled and times taken during a journey.

• True

• False

Light travels in straight lines.

• True

• False

We see luminous objects because they are light _____

• wires.

• sources.

• waves.

• reactions.